n!! - 1
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 133: | \[133!!-1\] | 2 × 6039246905999<13> × 258985793454361660506553<24> × 118371567257409079105170641921843923386823447809935029372486619955247748771921<78> |